Abstract
Night sky cooling is explored as an alternative to the conventional cooling technologies using fossil fuels. The night sky cooling method is based on the long wave radiation of unglazed collectors to the sky at night. An evaluation of the night sky cooling system is present for a residential building in three cities of Australia, namely Alice Springs, Darwin and Melbourne. The system comprises an unglazed flat plate solar collector integrated with borehole storage. It uses night sky radiation to reduce the temperature of the ground near to the boreholes. The system was simulated with TRNSYS, a transient simulation program. The simulation results for adequately sized systems show that night sky radiation is able to reduce the coolth storage borehole temperature and the proposed system is able to meet the cooling load of the residential building simulated in three locations. Borehole lengths of 270, 318 and 106 m are required for coolth storage with 90, 260 and 14 m2 collector area for heat rejection in Alice Springs, Darwin and Melbourne, respectively. At the 20th simulation year, the proposed system is able to achieve a system cooling coefficient of performance of 2.2 in Alice Springs, and 2.8 in Darwin and Melbourne.
Similar content being viewed by others
References
SCHULTZ A. Energy update 2009 [R]. Australian Bureau of Agricultural and Resource Economics Canberra. 2009.
DCC. Australia’s national greenhouse accounts-National greenhouse gas inventory accounting for the KYOTO target [R]. Department of Climate Change, Commonwealth Government of Australia, Canberra, 2009: 28.
WANG X, CHEN D, REN Z. Assessment of climate change impact on residential building heating and cooling energy requirement in Australia [J]. Building and Environment, 2010, 45(7): 1663–1682.
BURCH J, CHRISTENSEN C, SALASOVICH J, THORNTON J. Simulation of an unglazed collector system for domestic hot water and space heating and cooling [J]. Solar Energy, 2004, 77(4): 399–406.
MEDVED S, ARKAR C, CERNE B. A large-panel unglazed roof-integrated liquid solar collector-Energy and economic evaluation [J]. Solar Energy, 2003, 75(6): 455–467.
ANDERSON T N, DUKE M, KUNNEMEYER R, SMITH B. The development of a novel large area building integrated solar collector for pool heating [C]// In Solar2010. The 48th AuSES Annual Conference. Canberra, ACT, Australia. 2010.
JAIN D. Modeling of solar passive techniques for roof cooling in arid regions [J]. Building and Environment, 2006, 41(3): 277–287.
JUANICÓ L. A new design of roof-integrated water solar collector for domestic heating and cooling [J]. Solar Energy, 2008, 82(6): 481–492.
JIANG H, OKUMURA A, HOYANO A, ASANO K. A solar cooling project for hot and humid climates [J]. Solar Energy, 2001, 71(2): 135–145.
NAHAR N M, SHARMA P, PUROHIT M M. Studies on solar passive cooling techniques for arid areas [J]. Energy Conversion and Management, 1999, 40(1): 89–95.
MEIR M G, REKSTAD J B, LØVVIK O M. A study of a polymer-based radiative cooling system [J]. Solar Energy, 2003, 73(6): 403–417.
PARKER D S, SHERWIN J R, HERMELINK A H. NightCool: A nocturnal radiation cooling concept [C]// ACEEE 2008 Summer Study on Energy Efficiency in Buildings. American Council for an Energy Efficient Economy, Washington, DC. 2008.
DAMA T. Mathematical model and economic analysis of solar and nocturnal radiation assisted heat pumps for heating and cooling, in mechanical engineering [D]. Manhattan, USA: Kansas State University, 1987, 268.
HEIDARINEJAD G M. FARMAHINI FARAHANI, DELFANI S. Investigation of a hybrid system of nocturnal radiative cooling and direct evaporative cooling [J]. Building and Environment, 2010, 45(6): 1521–1528.
BERDAHL P, MARTIN M. Emissivity of clear skies [J]. Solar Energy, 1984, 32(5): 663–664.
MORRISON G L. TRNAUS-9.3 TRNSYS extensions for solar water heating [D]. Sydney, Australia: School of Mechanical Engineering, University of New South Wales. 2009.
Beureau of Metereology Climate Classification of Australia [EB/OL]. 2011-05-04. http://www.bom.gov.au/jsp/ncc/climate_averages/climate-classifications/index.jsp?maptype=kpngrp.
MORRISON G L, LITVAK A. Condensed solar radiation data base for Australia [D]. Sydney, Australia: Solar Thermal Energy Laboratory, University of New South Wales, 1999.
BANKS D. An Introduction to thermogeology: Ground-source heating and cooling [M]. Oxford: Blackwell Publishing. 2008: 107–110.
BERNIER M. A review of the cylindrical heat source method for the design and analysis of vertical ground-coupled heat pump systems [C]// Fourth International Conference on Heat Pumps in Cold Climates. Aylmer, Quebec, 2000: 939–944.
PHILIPPE M, BERIER M. Sizing calculation spreadsheet: Vertical geothermal bore fields [J]. ASHRAE Journal, 2010, 52: 20–27.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lhendup, T., Aye, L. & Fuller, R.J. Seasonal coolth storage system for residential buildings in Australia. J. Cent. South Univ. Technol. 19, 740–747 (2012). https://doi.org/10.1007/s11771-012-1066-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-012-1066-6